Prefabricated building wall reinforcement keel assembly and manufacturing method

Abstract

The application provides a reinforced keel assembly for a fabricated building wall and a manufacturing method, the assembly comprising vertical light steel keels and connecting fittings connected to the upper and lower ends of the vertical light steel keels, and the connecting fittings are connected to the main structure of the building; the connecting fittings comprise a plane steel plate and a vertical steel plate, the plane steel plate and the vertical steel plate are connected at a right angle, and the two vertical edges of the vertical steel plate are provided with flange portions at an included angle with the vertical steel plate, and the flange portions are folded inward or outward; the vertical light steel keel is provided with a matching portion at a position close to the upper and lower ends, the matching portion is matched with the flange portion, the vertical light steel keel is in parallel and connected by a horizontal pull rod. The wall keel has high strength and is not easy to deform, and flexible connection is formed between the wall keel and the main structure of the building, so that the wall framework can adapt to the displacement of the main structure and the shrinkage stress caused by the temperature difference of the wall material, and the wall cracking defect is comprehensively solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of prefabricated building, in particular to a prefabricated building wall reinforced keel assembly and manufacturing method. BACKGROUND

[0002] JG / T 578-2021 "Technical Requirements for Wall Panels for Prefabricated Buildings" was implemented on March 1, 2022. This industry standard has included various keel type composite walls in the standard, and the connection method of the wall keel and the main structure of the building is still the old technology, which is to install the top and bottom keels on the main structure, and then install the vertical keel of the wall panel on the top and bottom keels. This connection method is not suitable for the connection of innovative various combined reinforced keels, keel vertical components and main structures. This hard connection method makes the wall skeleton unable to adapt to the displacement capacity of the main structure, and the wall material is prone to cracking defects due to shrinkage stress caused by temperature difference changes, which restricts the development of the wall combined reinforced light steel keel skeleton of the building. And the structure of the current vertical keel is relatively simple, and the strength is not high, and after deformation, the wall panel is prone to cracking. A high-strength vertical keel that is easy to automate production is needed. SUMMARY

[0003] In view of the deficiencies in the prior art, the present application provides a prefabricated building wall reinforced keel assembly and manufacturing method, which has high strength and is not easy to deform, and forms a flexible connection between the wall keel and the building main body, so that the wall skeleton can adapt to the displacement of the main structure and the shrinkage stress caused by the temperature difference changes of the wall material, and comprehensively solves the wall cracking defect.

[0004] To achieve the above-mentioned purpose, the technical scheme provided by the present application is as follows: a prefabricated building wall reinforced keel assembly, comprising a vertical light steel keel and a connecting fitting connected to the upper and lower ends of the vertical light steel keel, and the connecting fitting is connected with the building main structure; the connecting fitting comprises a plane steel plate and a vertical steel plate, the plane steel plate and the vertical steel plate are connected at a right angle, the two vertical edges of the vertical steel plate are provided with a flange portion at an included angle with the vertical steel plate, and the flange portion is folded inward or outward; the vertical light steel keel is provided with a matching portion at a position close to the upper and lower ends, the matching portion matches with the flange portion, the vertical steel plate is parallel to or abuts against the back plate of the vertical light steel keel, the flange portion of the vertical steel plate extends into the matching portion and is in sliding cooperation with the vertical light steel keel, and the plane steel plate is fixedly connected with the building main structure; the vertical light steel keel is in parallel and connected by a horizontal pull rod, and the cross section of the vertical light steel keel is a groove with one opening, a plurality of keel reinforcing plates are arranged at intervals at the opening of the vertical light steel keel, and the two side surfaces of the vertical light steel keel are connected by the keel reinforcing plates.

[0005] The wall body vertical light steel keel is connected with the building main structure through a connecting fitting, the plane steel plate and the vertical plane steel plate of the connecting fitting are connected with the building main structure and the wall body vertical light steel keel respectively, the flexible connection between the wall body and the building main structure is formed through the micro deformation between the two steel plates, the vertical plane steel plate is strengthened through the flanging part, and the flanging part can be assembled and connected with the vertical light steel keel through insertion, sliding or hooking, so that a larger deformation amount between the wall plate and the main structure can be absorbed, the flanging part of the vertical plane steel plate is matched with the flanging part of the connecting fitting, the vertical plane of the vertical light steel keel is attached to the vertical plane steel plate during installation, and the flanging part of the vertical plane steel plate is inserted into the matching part and slidably matched with the vertical light steel keel, so that a small amount of vertical displacement can be generated between the building main structure and the vertical light steel keel of the wall plate, and wall body cracking caused by hard connection can be avoided. The vertical light steel keel is in a groove shape, and two sides are connected through a plurality of keel reinforcing plates to be reinforced, and a plurality of vertical light steel keels are connected through horizontal pull rods to form a reinforced wall plate framework, so that the wall body framework has high strength and is not easy to deform, and the crack resistance of the wall plate is improved.

[0006] Further, the vertical light steel keel comprises a back plate and two side plates, and the edges of the two side plates are inwardly bent to form right-angle flanges; the two ends of the keel reinforcing plate are provided with right-angle flanges, and the two ends of the keel reinforcing plate are stacked at the right-angle positions of the two ends of the vertical light steel keel and connected through impact welding. The edges of the two side plates of the vertical light steel keel are provided with right-angle flanges, which can improve the strength of the keel and be reinforced, and the keel reinforcing plate is preliminarily positioned through clamping and then connected through impact welding, so that automatic production is easy to realize.

[0007] Further, in order to improve the strength and facilitate impact welding, the back plate and / or the side plate are provided with reinforcing ribs, the right-angle positions of the inner corners of the keel reinforcing plate are provided with reinforcing ribs for connecting adjacent two sides, and the side surfaces of the right-angle flanges are provided with impact welding contact points.

[0008] Further, the flanging part of the connecting fitting is right-angle folded with the vertical plane steel plate, and the flanging part is outwardly folded in a direction away from the plane steel plate.

[0009] Further, the matching part comprises two vertical grooves provided on the back plate, the vertical grooves protrude from the back plate and have vertical through groove openings, and when the plane steel plate is installed in place, the flanging part of the vertical plane steel plate is inserted into the vertical grooves and small-gap matched. The vertical grooves are formed by punching the material on the vertical surface and edge folding, as an embodiment of the matching part, the small-gap matching can realize the sliding between the two.

[0010] Further, the vertical groove protrudes on the inner side of the back plate, the back plate is provided with a rectangular opening, and the vertical edge of one side of the rectangular opening is folded inward and then bent to form the inwardly curved vertical groove, the folded edge of the connecting fitting is outwardly folded toward the direction of the plane steel plate, the folded edge is inserted into the vertical groove, and the facade steel plate of the connecting fitting is adjacent to the outer side of the back plate. In this embodiment, the facade steel plate of the connecting fitting is installed on the outer side of the vertical light steel keel.

[0011] Further, the vertical groove protrudes on the outer side of the back plate, the back plate is provided with a rectangular opening, and the vertical edge of one side of the rectangular opening is folded inward and then bent to form the inwardly curved vertical groove, the folded edge of the connecting fitting is outwardly folded toward the direction of the plane steel plate, the folded edge is inserted into the vertical groove, and the facade steel plate of the connecting fitting is adjacent to the outer side of the back plate. In this embodiment, the facade steel plate of the connecting fitting is installed on the outer side of the vertical light steel keel.

[0012] Further, as a preferred, a through hole is formed on the back plate of the vertical light steel keel, and a lower folded edge is arranged on the lower half of the through hole, and the horizontal pull rod passes through the through hole of each vertical light steel keel and is fixed on the lower folded edge.

[0013] Further, the through hole is a long hole with circular arc-shaped upper and lower ends, and the width of the lower folded edge gradually increases toward the bottom of the hole. The long hole with circular arc-shaped upper and lower ends is not prone to stress concentration, the lower folded edge needs to have a larger width near the bottom of the hole to reduce the pressure and facilitate the fixation.

[0014] The application also provides a manufacturing method of the prefabricated building wall reinforced keel assembly, which comprises the following steps: (1) shaping the vertical light steel keel so that the included angle between the two side plates and the back plate is 95-102 degrees; (2) arranging the two end right angles of the keel reinforcing plate on the inner side of the two end right angles of the vertical light steel keel through the equipment clamping mechanism; (3) abutting the two side plates of the vertical light steel keel and the right angle folded edges of the two ends of the keel reinforcing plate through the pressing mechanism and connecting them through impact welding; (4) passing the horizontal pull rod through the through hole of each vertical light steel keel and fixing it on the lower folded edge of the through hole through screws or binding wires; and (5) connecting the upper and lower ends of the vertical light steel keel to the building main structure through the connecting fitting, inserting the facade steel plate of the connecting fitting into the vertical light steel keel, and connecting the plane steel plate to the building main structure through nailing or spot welding.

[0015] The application has the advantages that the wall keel has high strength and is not prone to deformation, and forms a flexible connection with the building main structure, so that the wall framework can adapt to the displacement of the main structure and the shrinkage stress of the wall material caused by temperature difference, and comprehensively solves the cracking defect of the wall. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1This is a schematic diagram of the structure of Embodiment 1 of the present invention.

[0017] Figure 2 for Figure 1 A structural diagram of the connecting fittings.

[0018] Figure 3 for Figure 1 A schematic diagram of the joint structure of the vertical light steel keel.

[0019] Figure 4 This is a schematic diagram of the connection structure between the present invention and the main building structure.

[0020] Figure 5 for Figure 1 A schematic diagram of the structure of the vertical light steel keel and keel reinforcement plate before assembly.

[0021] Figure 6 for Figure 1 Schematic diagram of the middle keel reinforcement plate.

[0022] Figure 7 This is a schematic diagram of the mating part of the vertical light steel keel in Embodiment 2 of the present invention.

[0023] Figure 8 for Figure 7 A structural diagram of the connecting fittings.

[0024] The present invention will now be described in further detail with reference to the accompanying drawings. Detailed Implementation

[0025] Example 1: As Figures 1 to 3 As shown, a prefabricated building wall reinforcement keel assembly includes a vertical light steel keel 2 and connecting fittings 1 at its upper and lower ends, which are connected to the main building structure 3 through the connecting fittings 1. The connecting fitting 1 includes a flat steel plate 11 and a vertical steel plate 12, which are connected at right angles. The two vertical sides of the vertical steel plate 12 are provided with flanges 121 at a 90-degree angle to the vertical steel plate 12. The width of the flanges 121 is 7-9mm, and the flanges 121 are folded outward in a direction away from the flat steel plate 11.

[0026] The vertical light steel keel 2 has mating parts near its upper and lower ends that cooperate with the flanged portion 121. The facade steel plate 12 is parallel to or abuts against the back plate 23 of the vertical light steel keel 2. The flanged portion 121 of the facade steel plate 12 extends into the mating part and slides to cooperate with the vertical light steel keel 2. The planar steel plate 11 is fixedly connected to the main building structure 3. Figure 4As shown, the vertical light steel keel 2 of the wall body is connected with the building main structure 3 through the connecting fitting 1, the plane steel plate 11 and the vertical plane steel plate 12 of the connecting fitting 1 are connected with the building main structure 3 and the vertical light steel keel 2 respectively, the flexible connection between the wall body and the building main structure 3 is formed through the micro deformation between the two steel plates, the vertical plane steel plate 12 is reinforced through the turn-up part 121, and the turn-up part 121 can also be assembled and connected with the vertical light steel keel 2 through insertion and sliding, so that a larger deformation amount between the wall plate and the main structure can be absorbed, the matching part matched with the turn-up part 121 of the connecting fitting 1 is arranged on the vertical light steel keel 2, the vertical plane steel plate 12 is close to or attached to the back plate 23 of the vertical light steel keel 2 during installation, the turn-up part 121 of the vertical plane steel plate 12 extends into the matching part and is slidingly matched with the vertical light steel keel 2, so that a small amount of vertical displacement can be generated between the building main structure 3 and the vertical light steel keel 2 of the wall plate, and the problem of wall cracking caused by hard connection can be avoided.

[0027] The matching part includes two vertical grooves 22 arranged on the back plate 23, the vertical grooves 22 protrude from the back plate 23 and have vertical through groove openings, when the plane steel plate 11 is installed in place, the turn-up part 121 of the vertical plane steel plate 12 extends into the vertical groove 22 and is matched with a small gap. The vertical groove 22 is formed by punching and edge rolling of the material on the back plate 23, and the small gap matching can realize the sliding between the two. In the embodiment, the vertical groove 22 protrudes from the inner side of the back plate 23, the back plate 23 is provided with a rectangular opening 21, one side vertical edge 24 of the rectangular opening 21 is inwardly folded and bent to form the inwardly bent vertical groove 22, the turn-up part 121 of the connecting fitting 1 is outwardly folded in the direction away from the plane steel plate 11, the turn-up part 121 is inserted into the vertical groove 22, and the vertical plane steel plate 12 of the connecting fitting 1 is adjacent to the inner side of the back plate 23. In this embodiment, the vertical plane steel plate 12 of the connecting fitting 1 is installed on the inner side of the vertical light steel keel 2. When the main structure is subjected to wind load or vibration shaking, the wall body framework can adapt to the displacement of the main structure and the shrinkage stress of the wall body material caused by temperature difference through the angle and torsional swing between the vertical plane steel plate 12 and the plane steel plate 11 and the vertical sliding of the matching part, and the problem of wall cracking caused by hard connection can be avoided.

[0028] Of course, as another embodiment, the vertical groove 22 can also protrude from the outer side of the back plate 23, and the turn-up part 121 of the connecting fitting 1 is inwardly folded in the direction towards the plane steel plate 11, the turn-up part 121 is inserted into the vertical groove 22, and the vertical plane steel plate 12 of the connecting fitting 1 is adjacent to the outer side of the back plate 23. In this embodiment, the vertical plane steel plate 12 of the connecting fitting 1 is installed on the outer side of the vertical light steel keel 2.

[0029] As shown in the drawings, Figure 1 , Figure 4As shown, the vertical light steel keel 2 is parallel and connected by horizontal tie rods 5, which connect multiple vertical light steel keels 2 to form a reinforced wall panel framework, which is high in strength and not easy to deform, and also improves the crack resistance of the wall panel. The back plate 23 of the vertical light steel keel 2 is provided with a through hole 25, which is a long hole with arc-shaped upper and lower ends. The long hole with arc-shaped upper and lower ends is not easy to produce stress concentration. The lower half of the through hole 25 is provided with a lower flange 251, and the width of the lower flange 251 gradually increases towards the bottom of the hole. The horizontal tie rod 5 passes through the through hole 25 of each vertical light steel keel 2 and is fixed on the lower flange 251. The bottom of the lower flange 251 needs to support the horizontal tie rod 5, so as to reduce the pressure and facilitate fixation. In this embodiment, the horizontal tie rod 5 is fixed on the lower flange 251 of the through hole 25 by a rivet 6. The horizontal tie rod 5 is a round rod, and the contact surface shape of the lower edge of the through hole 25 is also suitable. A positioning groove for positioning the horizontal tie rod 5 can also be provided on the lower flange 251 of the lower edge of the through hole 25. A wire hole can also be provided on the lower flange 251, and the horizontal tie rod 5 is fixed on the lower flange 251 of the through hole 25 by a wire.

[0030] The cross section of the vertical light steel keel 2 is a groove with one side open, and a plurality of batten reinforcing plates 4 are arranged at intervals at the opening of the groove, which connect the two side faces of the vertical light steel keel 2. The vertical light steel keel 2 is in the form of a groove, and the two side faces are connected by a plurality of batten reinforcing plates 4 to be reinforced. As shown in the figure, Figure 5 、 Figure 6 As shown, the vertical light steel keel 2 includes a back plate 23 and two side plates 26, and the edges of the two side plates 26 are bent inward to form right-angled flanges. The two ends of the batten reinforcing plate 4 are provided with right-angled flanges, and in this embodiment, the two ends of the batten reinforcing plate 4 are stacked at the right-angled inner corners of the two ends of the vertical light steel keel 2 and are connected by impact welding. The edges of the two side plates 26 of the vertical light steel keel 2 are provided with right-angled flanges, which can improve the strength of the batten and be reinforced, and the batten reinforcing plate 4 is preliminarily positioned by clamping and then connected by impact welding, which is easy to realize automatic production. In order to improve the strength and facilitate impact welding, the two side plates 26 are provided with reinforcing ribs 27, the right-angled inner corners of the batten reinforcing plate 4 are provided with triangular reinforcing ribs 41 connecting the two adjacent faces, and the outer side of the right-angled flange is provided with an impact welding contact 42 for impact welding with the inner side of the two side plates 26 of the adjacent vertical light steel keel 2.

[0031] The manufacturing method of the reinforced keel assembly of the prefabricated building wall body comprises the following steps: (1) forming the vertical light steel keel 2, and the angle between the two side plates 26 and the back plate 23 is 95-102 degrees, so that the opening width is slightly larger than the width of the back plate 23 and the length of the keel reinforcing plate 4, so as to facilitate the placement of the keel reinforcing plate 4; (2) the two ends of the keel reinforcing plate 4 are straightly overlapped inside the two end straight angles of the vertical light steel keel 2 through the program setting device clamping mechanism; (3) the two side plates 26 of the vertical light steel keel 2 are attached to the outer side surface of the straight angle flange of the two ends of the keel reinforcing plate 4 through the pressing mechanism of the device, and are connected through impact welding; (4) the horizontal pull rod 5 is inserted through the through hole 25 of each vertical light steel keel 2, and is fixed with the lower flange 251 of the through hole 25 through screws or binding wires; (5) the upper and lower ends of the vertical light steel keel 2 are connected with the building main structure 3 through the connecting fittings 1, the facade steel plate 12 of the connecting fittings 1 is inserted into the vertical light steel keel 2, and the plane steel plate 11 is connected with the building main structure 3 through shot pinning or spot welding. If the main structure is a steel structure, spot welding is adopted, and if the main structure is a concrete structure, shot pinning is adopted.

[0032] In this embodiment, the structure of each component and the connection relationship between the components are basically the same as those in Embodiment 1, except that, as shown in Figs. Figure 7 Figure 8 The two flange parts 121 are bent inwardly after passing through the rectangular opening 21 and are attached to the inner side surface of the back plate 23. The two flange parts 121 of the facade steel plate 12 form two open U-shaped grooves 122 after being bent inwardly, and the U-shaped grooves 122 are in small gap cooperation with the back plate 23 to realize sliding cooperation. In this embodiment, the width of the rectangular opening 21 is smaller than that in Embodiment 1, and the width is only required to be able to accommodate the flange part 121 with a proper gap, and the length of the rectangular opening 21 is greater than the length of the flange part 121, so as to realize the relative sliding between the connecting fitting 1 and the back plate 23 of the vertical light steel keel.

[0033] The above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application, and they should be covered in the scope of the claims of the present application.​

Claims

1. A prefabricated building wall reinforcement keel component, characterized in that: The system includes vertical light steel keel and connecting fittings at its upper and lower ends, which connect to the main building structure. The connecting fittings include a planar steel plate and a vertical steel plate, connected at right angles. The vertical edges of the vertical steel plate are provided with flanges at an angle to the vertical steel plate, which fold inwards or outwards. The vertical light steel keel has mating parts near its upper and lower ends that cooperate with the flanges. The vertical steel plate is parallel to or abuts against the back plate of the vertical light steel keel, and the flanges of the vertical steel plate extend into the mating parts and engage with the vertical light steel keel. The planar steel plate is fixedly connected to the main building structure via a sliding fit. Multiple vertical light steel keels are arranged in parallel and connected by horizontal tie rods. The cross-section of the vertical light steel keel is a channel shape with one open side. Multiple spaced-apart keel reinforcing plates are provided at the opening, connecting the two sides of the vertical light steel keel. The vertical light steel keel includes a back plate and two side plates. The edges of the side plates are bent inwards to form right-angle flanges. Right-angle flanges are provided at both ends of the keel reinforcing plates. The two ends of the keel reinforcing plates are stacked at right angles at the two right angles of the vertical light steel keel and connected by spot welding. The mating part includes two vertical grooves provided on the back plate. The vertical grooves protrude from the back plate and have vertical through openings. When the flat steel plate is installed in place, the flanged part of the vertical steel plate extends into the vertical groove and fits with a small clearance. The back plate is provided with a rectangular opening. One vertical edge of the rectangular opening is folded inward and bent to form the inwardly curved vertical groove. When the vertical groove protrudes on the inner side of the back plate, the flanged part of the connecting fitting folds outward in the direction away from the flat steel plate and inserts into the vertical groove. The vertical steel plate of the connecting fitting is adjacent to the inner side of the back plate. When the vertical groove protrudes on the outer side of the back plate, the flanged part of the connecting fitting folds inward in the direction towards the flat steel plate and inserts into the vertical groove. The vertical steel plate of the connecting fitting is adjacent to the outer side of the back plate.

2. The prefabricated building wall reinforcement keel assembly according to claim 1, characterized in that: The back plate and / or side plate are provided with reinforcing ribs, and the inner right angle of the keel reinforcing plate is provided with reinforcing ribs connecting the two adjacent sides, and the side of the right angle flange is provided with spot welding contacts.

3. The prefabricated building wall reinforcement keel assembly according to claim 1, characterized in that: The flange of the connecting fitting is folded at a right angle to the vertical steel plate, and the flange is folded outward in a direction away from the flat steel plate.

4. The prefabricated building wall reinforcement keel assembly according to claim 1, characterized in that: The back plate of the vertical light steel keel has through holes, and the lower half of the through holes has a downward flange. The horizontal tie rod passes through the through holes of each vertical light steel keel and is installed and fixed on the downward flange.

5. The prefabricated building wall reinforcement keel assembly according to claim 4, characterized in that: The through hole is an elongated hole with rounded ends, and the width of the lower flange gradually increases towards the bottom of the hole.

6. A method for manufacturing a prefabricated building wall reinforcement keel assembly as described in any one of claims 1-3, characterized in that... The process includes the following steps: (1) forming the vertical light steel keel so that the angle between its two side plates and the back plate is 95-102 degrees; (2) stacking the two ends of the keel reinforcing plate at right angles on the inside of the two ends of the vertical light steel keel using the equipment clamping mechanism; (3) pressing the two side plates of the vertical light steel keel against the right angle flanges at both ends of the keel reinforcing plate using the pressing mechanism, and connecting them by spot welding; (4) passing the horizontal tie rod through the through holes of each vertical light steel keel, and fixing it to the lower flange of the through hole by screws or binding wires; (5) connecting the upper and lower ends of the vertical light steel keel to the main building structure through the connecting fittings, inserting the vertical steel plate of the connecting fittings into the vertical light steel keel, and connecting the flat steel plate to the main building structure by nailing or spot welding.

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